| 525 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES |
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| * | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {4} |
| 50 | DF | .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32} |
| 55 | DF | .~.~ At least one solid polymer derived from ethylenic reactants only {25} |
| 242 | DF | .~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant {21} |
| 244 | DF | .~.~.~.~ Contacting a solid polymer derived from ethylenic reactants only with an ethylenic reactant in the presence of a specified material {14} |
| 248 | DF | .~.~.~.~.~ Specified material contains a carbon or hydrogen atom bonded directly to a metal atom {2} |
| 250 |  | .~.~.~.~.~.~ Metal atom is Group IA metal atom (Li, Na, K, Rb, Cs, Fr) |